package com.qiche.common;

import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;


public class TokenCache {
    private static Logger logger= LoggerFactory.getLogger(TokenCache.class);

    public  static  final  String TOKEN_PREFIX="token_";
    private static LoadingCache<String,String> loadingCache= CacheBuilder.newBuilder().initialCapacity(1000).maximumSize(10000).expireAfterAccess(12, TimeUnit.HOURS).build(new CacheLoader<String, String>() {
        //默认的数据加载实现，当调用get取值的时候，如果key没有对应的值，就调用这个方法进行加载
        @Override
        public String load(String s) throws Exception {
            return "null";
        }
    });

    public static  void  setKey(String key,String value){
        loadingCache.put(key,value);
    }

    public static  String  getKey(String key){
        String value=null;
        try {
            value=loadingCache.get(key);
            if("null".equals(value)){
                return null;
            }
            return value;
        } catch (ExecutionException e) {
            logger.error("localCache get error:"+e.getMessage());
            e.printStackTrace();
        }
        return null;

    }

}
